In order to control plants via Dropbox we built the following control circuit / Cyber Physical System (CPS) / Internet of Things application. To support sustainability, the water used is taken out of a natural pond. The required energy is supplied by a solar panel that charges an old automotive accumulator (battery). Images of the plant growth progress and data is being sent to dropbox constantly. This project was part of a thesis and the advanced development / recursive modelling has been perfo ...